Why we need spool at database level. - response (1) by VBurmist

Hi,
 
you are right, there is little use of the spool limit for a database.  One possible scenario is when you create a user right below that database in the database hierarchy, and don't specify the spool limit for that user, then the spool limit is inherited from the database to the user.   Very rarely happens though.
 
Please remember that using profiles to manage spool limits is even a better practice than using user level limits.

Regards,
Vlad.